Too much information? Not for “The Love Boat” doctor. Bernie Kopell, making his New York stage debut in “Viagara Falls,” a comedy about old men and erectile-dysfunction pills, says he’s occasionally popped the performance-enhancing drugs himself. “Sometimes people of a certain age need a jet assist,” he said. “That’s a phrase that’s used in the aeronautics business.”

Kopell, 77 and best known as “Doc” from “The Love Boat,” has gotten cozy with the subject after performing “Viagara Falls” over the past two years. In the play, he portrays Moe Crubbs, a widower who suspects his best friend has a terminal illness and decides to throw him a birthday party involving a call girl and a “black market” bottle of the aforementioned pills. The show, which toured mostly in Canada, opens July 21 at the Little Shubert Theatre.

The actor, who first became a father at age 64, credits wife Catrina Honadle, age 44, for being “very fertile” and bringing him “back to the world of the living” after the breakup of his previous marriage. They are parents to 7-year-old Josh and 12-year-old Adam (the oldest is named for Kopell’s “Love Boat” character, Dr. Adam Bricker). Kopell lives in Tarzana, Calif., where the family routine includes swimming. (Young Josh enjoys getting dragged across the pool while hanging onto the tail of Klugman, a golden retriever named after Kopell’s actor-friend, Jack Klugman.)

Kopell talked with Speakeasy about the New York stage, “Love Boat” reunions and the family pediatrician’s sex life.